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	   <h2>overlayLayer.js</h2>
	
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<h4>Summary</h4>
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		No overview generated for 'overlayLayer.js'<BR/><BR/>
	
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        <b>Class Summary</b>
    
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    <td width="15%"><b><a href="_overlayLayer.html">_overlayLayer</a></b></td>
    <td>&nbsp;</td>
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        <pre class="sourceview"><span class="comment">/**********************************************************************
 *
 * $Id: overview-summary-overlayLayer.js.html,v 1.1 2006/03/15 15:56:59 pspencer Exp $
 *
 * purpose: an Object Overlay class 
 *
 * author: Lorenzo Becchi &amp; Andrea Cappugi
 *
 * TODO:
 *   - many things ...
 * 
 **********************************************************************
 *
 * Copyright (c) 2005, Lorenzo Becchi &amp; Andrea Cappugi
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 *
 **********************************************************************/</span>

 
 <span class="reserved">function</span> _overlayLayer( szName, bVisible, opacity, imageformat, bQueryable, scales,sessionID)
 {
    _layer.apply(<span class="reserved">this</span>,[szName,bVisible,opacity,imageformat,bQueryable,scales]);
    <span class="reserved">this</span>.bWidthHeight = false; <span class="comment">//track adding width/height</span>
    <span class="reserved">this</span>.sessionId=sessionID;

    <span class="reserved">for</span> (var p in _layer.<span class="reserved">prototype</span>)
    {
        <span class="reserved">if</span> (!_overlayLayer.<span class="reserved">prototype</span>[p])
            _overlayLayer.<span class="reserved">prototype</span>[p]= _layer.<span class="reserved">prototype</span>[p];
    }

 }


_overlayLayer.<span class="reserved">prototype</span>.setTile = <span class="reserved">function</span>(img)
{
    var szForce = <span class="literal">''</span>;
    var szLayers = <span class="literal">''</span>;
    <span class="reserved">if</span> (arguments[1])
        szForce = <span class="literal">'&amp;force=true'</span>;
    var szGroup = <span class="literal">"&amp;g="</span>+img.layer.domObj.id;
    var szScale = <span class="literal">'&amp;s='</span>+<span class="reserved">this</span>._map.aScales[<span class="reserved">this</span>._map.currentScale];
   var szSessionId=<span class="literal">'&amp;sessionId='</span>+<span class="reserved">this</span>.sessionId;
    <span class="comment">// dynamic imageformat</span>
    var szImageformat = <span class="literal">''</span>;
    var image_format = <span class="literal">''</span>;
    <span class="reserved">if</span> (img.layer.imageformat &amp;&amp; img.layer.imageformat != <span class="literal">''</span>)
    {
        image_format = img.layer.imageformat;
        szImageformat = <span class="literal">'&amp;i='</span>+image_format;
    }
 
    var l = safeParseInt(img.style.left) + <span class="reserved">this</span>._map.kaMap.xOrigin;
    var t = safeParseInt(img.style.top) + <span class="reserved">this</span>._map.kaMap.yOrigin;
    var src = <span class="reserved">this</span>._map.kaMap.server+
              <span class="literal">"/XMLOverlay/tileOverlay.php"</span>+
              <span class="literal">'?t='</span>+t+
              <span class="literal">'&amp;l='</span>+l+
              szScale+szForce+szGroup+szImageformat+szSessionId;
 
     <span class="reserved">if</span> ((<span class="reserved">this</span>.isIE4) &amp;&amp; (image_format.toLowerCase() == <span class="literal">"png24"</span>))
     {
         <span class="comment">//apply png24 hack for IE</span>
         img.style.visibility = <span class="literal">'hidden'</span>;
         img.src = <span class="reserved">this</span>._map.kaMap.aPixel.src;
         img.style.filter = <span class="literal">"progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"</span>+src+<span class="literal">"', sizingMethod='scale')"</span>;
     }
     <span class="reserved">else</span>
     {
         <span class="reserved">if</span> (img.src != src)
         {
             img.style.visibility = <span class="literal">'hidden'</span>;
             img.src = <span class="reserved">this</span>._map.kaMap.server+
                   <span class="literal">"/XMLOverlay/tileOverlay.php"</span>+
                   <span class="literal">'?t='</span>+t+
                   <span class="literal">'&amp;l='</span>+l+
                   szScale+szForce+szGroup+szImageformat+szSessionId;
         }
     }
}</pre>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Wed Mar 15 10:50:59 2006</div>
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